Jiang Tengyao, Yuan Yuan, Liu Sijia, Hunt Andrew J, Tan Gang
Department of Civil and Architectural Engineering, University of Wyoming, 1000 E. University Avenue, Dept. 3295, Laramie, Wyoming 82071, United States.
Green Chemistry Centre of Excellence, Department of Chemistry, University of York, York YO10 5DD, UK.
ACS Omega. 2020 Jun 25;5(26):16021-16029. doi: 10.1021/acsomega.0c01437. eCollection 2020 Jul 7.
A highly active and recyclable Pd-deposited catalyst has been successfully prepared for the Heck reaction. Bio-oil liquid, a byproduct from the microwave pyrolysis of wastepaper, is employed to immobilize palladium nanoparticles on a solid support. FTIR, GC, and NMR results indicate the self-polymerization feature of bio-oil, thus giving rise to a uniform carbonaceous layer coated around the surface of the catalyst. Characteristic analysis of the catalyst indicates that palladium nanoparticles are well-dispersed on the parent SBA-15 solid substrate, which is attributed to the carbonaceous layer that is derived from bio-oil carbonization, allowing a high catalytic performance as a heterogeneous catalyst for the Heck reaction. The as-synthesized catalyst demonstrates remarkable recyclability with firm deposition of palladium nanoparticles on the solid support and could be reused without a dramatic decrease in catalytic activity.
一种用于Heck反应的高活性且可循环使用的负载钯催化剂已成功制备。采用废纸微波热解的副产物生物油液体将钯纳米颗粒固定在固体载体上。傅里叶变换红外光谱（FTIR）、气相色谱（GC）和核磁共振（NMR）结果表明生物油具有自聚合特性，从而在催化剂表面形成一层均匀的碳质层。催化剂的特性分析表明，钯纳米颗粒在母体SBA - 15固体基质上分散良好，这归因于生物油碳化产生的碳质层，使其作为Heck反应的多相催化剂具有高催化性能。所合成的催化剂表现出显著的可循环性，钯纳米颗粒牢固地沉积在固体载体上，并且可以重复使用而催化活性不会大幅降低。
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